Intel C621 | S3647 | CPU's Xeon | Maximum number of CPUs 2 | EATX | 4xPCI-Express 3.0 8x | 3xPCI-Express 3.0 16x | 1xM.2 | DDR4 | Memory features RDIMM/LRDIMM | Memory slots 16 | 1x15pin D-sub | 7xUSB 3.0 | 1xCOM | 2xRJ45 | 1xCOM via Header | LAN Gigabit | RAID SATA 0, 1, 10